forked from 1b-agent/opencadstudio-upstream
Alexey Bagno
13b6a08e77
A trackpad could only zoom: every scroll delta, wheel notch or not, went into the same zoom step, and a pinch never arrived at all. iced's winit layer converts only the window events it has an iced equivalent for, so winit's `PinchGesture` was dropped before the app saw it. Scroll deltas now split by what produced them: a wheel reports notches and still zooms, a precise-scrolling device reports pixels and pans. The same pixel split keeps working everywhere else — the browser build reports every wheel notch as pixels, so there they keep zooming. The pinch is read straight from AppKit with a local `NSEvent` monitor, since the app cannot see the gesture through iced at all, and handed to the app through a subscription shaped like the SpaceMouse bridge. It maps 1:1 onto the camera: fingers 5% further apart leave the view 5% closer. The pan and zoom bodies are now shared by the mouse and the gestures, so the middle-button drag, the wheel, two fingers and a pinch all move the view through one path — in model space, in a tiled pane and inside a floating viewport alike.